نتایج جستجو برای: 30 percent have average ones
تعداد نتایج: 3639880 فیلتر نتایج به سال:
Policy distortions and financial frictions are two leading candidates in generating capital misallocation. This paper designs an identification strategy to separate their effects on average MRPK dispersion across firm ownership, as the average treatment effect on the treated and the selection bias from a policy intervention. Financial frictions are estimated to cause an aggregate TFP loss of 8....
BACKGROUND Children and young adults with undiagnosed cardiovascular disorders at risk for sudden death may have warning symptoms or significant family history that is detectable through screening. The objective of this study was to determine the prevalence of warning symptoms and family history in a cohort of children and young adults who suffered sudden cardiac arrest (SCA). METHODS A retro...
Purpose: In this article, we aimed at the evaluation of children and young adult's Persian encyclopedias, published during 2006-2011, with reference works evaluation criteria. Methodology: Evaluative research method was used for directing research. The population of study was 150 titles of published encyclopedias. The tool for evaluation was a researcher-made checklist that gathered through li...
The problem of long-term unemployment—jobless but seeking work for 12 months or more—was persistent throughout the 1980s and 1990s in all 30 member countries of the Organisation for Economic Co-operation and Development (OECD). However, the extent of the problem differed greatly among countries. In Canada, Norway, Sweden, and the United States, the proportion of unemployed who were long-term un...
boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
Alcohol abuse and dependence are costly to society in both human and economic terms. In 1989, 108,458 deaths in the United States were alcohol related (Stinson et al. 1993), accounting for about 5 percent of all deaths that year and making alcohol the fourth leading cause of death after heart disease, cancer, and stroke (National Center for Health Statistics (NCHS) 1994a). These deaths represen...
BACKGROUND To quantitatively evaluate the safety and related-toxicities of intensity modulated radiotherapy (IMRT) dose-volume histograms (DVHs), as compared to the conventional three-dimensional conformal radiotherapy (3D-CRT), in gynecologic malignancy patients by systematic review of the related publications and meta-analysis. METHODS Relevant articles were retrieved from the PubMed, Embas...
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